How to use scanner

Answer 1

Complete sololearn java course literally it is one of the first lessons
So you’ll know fastly

Answer 2

https://www.baeldung.com/java-scanner

Answer 3

Scanner sc=new Scanner(System.in);

int a=sc.nextInt();
double b=sc.nextDouble();
String c=sc.next();

System.out.println("integer umber is "+a);
System.out.println(b+c);

Answer 4

//import the Scanner class from java.util package
import java.util.Scanner;

public class Main {
public static void main(String [] args) {
// instantiate the Scanner class
Scanner sc = new Scanner(System.in);
System.out.println("Enter your name:");
String name = sc.nextLine();
}
}

run this code and you'll figure out...also finish some tutorials you will know the basics